Clinical Microbiology and Antimicrobial Chemotherapy. 2025; 27(1):33-41
Objective. To study pharmacodynamics of meropenem alone and in combination with avibactam in an in vitro dynamic model; to evaluate effectiveness of meropenem against K. pneumoniae strains producing and not producing carbapenemases; to study impact of bacterial inoculum on meropenem activity and its effects.
Materials and Methods. K. pneumoniae producing KPC and OXA-48 carbapenemases and non-producing strains were exposed to meropenem or its combination with avibactam (carbapenemase-producing strains only) in a modified in vitro hollow-fiber infection model (pneumoniae) simulating human pharmacokinetics of drugs administrated thrice daily for 5 days.